--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/ada/libgnat/s-rpc.ads	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,91 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT RUN-TIME COMPONENTS                         --
+--                                                                          --
+--                           S Y S T E M . R P C                            --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--          Copyright (C) 1992-2017, Free Software Foundation, Inc.         --
+--                                                                          --
+-- This specification is derived from the Ada Reference Manual for use with --
+-- GNAT. The copyright notice above, and the license provisions that follow --
+-- apply solely to the  contents of the part following the private keyword. --
+--                                                                          --
+-- GNAT is free software;  you can  redistribute it  and/or modify it under --
+-- terms of the  GNU General Public License as published  by the Free Soft- --
+-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
+-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
+-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
+-- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
+--                                                                          --
+-- As a special exception under Section 7 of GPL version 3, you are granted --
+-- additional permissions described in the GCC Runtime Library Exception,   --
+-- version 3.1, as published by the Free Software Foundation.               --
+--                                                                          --
+-- You should have received a copy of the GNU General Public License and    --
+-- a copy of the GCC Runtime Library Exception along with this program;     --
+-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
+-- <http://www.gnu.org/licenses/>.                                          --
+--                                                                          --
+-- GNAT was originally developed  by the GNAT team at  New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+--  Note: this is a dummy implementation which does not support distribution.
+--  The GLADE distribution package includes a replacement for this file which
+--  has a different private
+
+with Ada.Streams;
+
+package System.RPC is
+
+   type Partition_ID is range 0 .. Integer'Last;
+
+   Communication_Error : exception;
+
+   type Params_Stream_Type
+     (Initial_Size : Ada.Streams.Stream_Element_Count) is new
+       Ada.Streams.Root_Stream_Type with private;
+
+   overriding procedure Read
+     (Stream : in out Params_Stream_Type;
+      Item   : out Ada.Streams.Stream_Element_Array;
+      Last   : out Ada.Streams.Stream_Element_Offset);
+
+   overriding procedure Write
+     (Stream : in out Params_Stream_Type;
+      Item   : Ada.Streams.Stream_Element_Array);
+
+   --  Synchronous call
+
+   procedure Do_RPC
+     (Partition  : Partition_ID;
+      Params     : access Params_Stream_Type;
+      Result     : access Params_Stream_Type);
+
+   --  Asynchronous call
+
+   procedure Do_APC
+     (Partition  : Partition_ID;
+      Params     : access Params_Stream_Type);
+
+   --  The handler for incoming RPCs
+
+   type RPC_Receiver is
+     access procedure
+       (Params     : access Params_Stream_Type;
+        Result     : access Params_Stream_Type);
+
+   procedure Establish_RPC_Receiver (
+      Partition : Partition_ID;
+      Receiver  : RPC_Receiver);
+
+private
+
+   type Params_Stream_Type
+     (Initial_Size : Ada.Streams.Stream_Element_Count) is new
+       Ada.Streams.Root_Stream_Type with null record;
+
+end System.RPC;